Clamp for well-drilling cables.



0.1. MAPES & F. c. YANDA. CLAMP FOR WELL DRILLING CABLES.

APPLICATION FILED IAN- 6, 19l5- Patented Feb. 1, 1916.

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CLARENCE '1. MAPES, OF GRAFTON, AND FERDINAND C. YANDA, PITTSBURGH,

i PENNSYLVANIA, ASSIGNORS TO OIL WELL SUPPLY COMPANY, OF

PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

CLAMP FOR \VELiL-DRILLI'NG CABLES.

messes.

Specification of Letters Patent.

Application filed January 6, 1915, Serial Na 767.

To'all'whom it may concern:

Be it known that we, CLARENCE T. Marne and Fnnnrxnxo C. YAxnA, citizensof the United States, and residents of Grafton and Pittsburgh,respectively, in the county of Allegheny and State of Pennsylvania, haveinvented certain new and useful Improvements in Clamps for\Vell-Drilling Cables,

' from a w'edging action such as results from the use of tapered orwedge-shaped slips, and the primary object is to provlde a pair ofopposed jaws of improved construction,

. together with improved means for holding and retaining the jaws in thebody.

'A'further purpose is to provide a clamp of the general type stated,wherein the clamp-suspending means is connected directly to thebodyinstead of to the lighter and more easily broken jaws as heretoforeproposed.

In the accompanying drawings, Figure l is a front elevation of theimproved clamp,

. and Fig. 2 is a view in top plan of the same.

Figs. 3 and 4 are vertical sections, taken on lines 3-3 and 44*.,respectively, of Fig. 2. Fig. 5 is a sectional plan, taken on line 55 ofFig. 4.

Referring to the drawings, 2 designates the clamp-body which is formedwith the vertical cylindrical bore 3, the latter being open at one sidethrough a vertical face to form the cable slot or passage 4. Project ingfrom the upper portion of the body at diametrically oppositesides of thebore are the hook-like ears 5 for receiving the usual reins, not shown,for suspending the clamp from the temper screw swivel bar of welldrilling apparatus in manner familiar in the art. The body bore and thesupporting ears 5 are located at one side of the center of the body sothat the latter'may be properly balanced when suspended, the heavierrear side.

neath and with their headed extremities disposed downwardly and thuspresenting no obstructing projection which would be Patented Feb. 1,1916.

liable to injury if exposed at the upper sides of the ears.

Operative within bore 3 is the pair of op posed jaws 7. Each jaw isformed with an elongatedbody portion 8 of segmental shape incross-section and with its outer face curved to fit and rotate withinthe cylindrical bore 3. The jaws are preferably of such length that theydepend beneath the lower end of body 2, while at their upper ends theyare flanged laterally at 7 to engage the flat top bearing face 9 of body2, said face en-. circling bore 3 and interrupted only by the.

cable passage 4. By this means the jaws are rotatably supported in thebody bore with flanges 7 holding them against downward displacement. Anarm 10 projects laterally from each jaw, and these arms are" operativein the lateral enlargements 11 in opposite walls of cable passage 4,these en,- largements being located intermediatethe' affording the jawsand their arms free movement as required for clamping andfor reupper andlower ends of the clamp body and soleasing the cable. With the jawbodies 8 of I segment shape in cross-section they may be" rotated intothe full open position shown in' Fig. 5, with the rear faces of the jaws in en gagement with each other and with arms 10 moved fully backwardor outward into the passage enlargements 11. Arms 10 and cable passage 4are of such size that when 130- sitioning' the jaws by'moving them downward one after the other into bore 3, the arm is passed downwardlythrough passage 4 until it reaches enlargement 11. v

.For clamping, the drilling cable C, the faces of the jaws are formedwith semicircular depressions 12 located at one side of or eccentric tothe center of bore 3, and fitting these depressions are thecable-gripping liners or slips 13. The liners are flanged at their upperends at 13 to fit corresponding enlargements of the upper extremities ofcavities 12, and by this means together with the countersunk securingscrews 14 entered through the jaws, the liners are securely held. Linersof various sizes may be provided for adapting the same clamp to cablesof different diameters, and with the gripping elements thus arranged,the parts most exposed to Wear, 2'. e., the liners, may be rethan theother if turned to one side.

engagement with both arms, as in Figs. 1.

and 2, and carrying the screw 17 for obtaining the desired adjustment.

. Itis characteristic of the invention that the clamp-suspending meansare connected to the clamp body rather than to the jaws, therebyrelieving the latter of destructive strains. At the same time the jawsare positively supported by the body, the flanged upper extremitiesof'the jaws bearing on surface 9 in whatever position the jaws may beturned, the interruption of said bearing surface formed by cable passage4 being bridged in part by both jaws as when the parts are in thesymmetrical adjustment shown in Figs. 1 and 2, orby the flange of onejaw more In any case, the support is secure and positive and at rightangles to the elongated gripping hold of the jaws, such hold being ofuniform pressure from end to end of the pair of jaws.

We claim 1. In cable suspending means and in combination, a clamp bodyhaving a vertical bore of fixed dimensions and a cableenteringpassageway leading into said bore, opposed cable-grippingjaws extendingthrough and rotatable within the bore, each'jaw being flanged outwardlyat its upper end, said flanges being adapted to rest upon the top of theclamp body to support'the jaws, and jaw-adjusting means, said lattermeans including an element carried by and movable with each jaw, saidelements cooperating in moving the jaws to cable-gripping position andmaintaining them in such position, said body being recessed to permitfree movement of said elements.

2. In cable suspending means and in com- .bination, a clamp body havinga vertical bore of fixed dimensions and a cable-entering passagewayleading into said bore, op-

posed c'ablegr1pping jaws extending through and rotatable within themore, each jaw being flanged outwardly at its upper end,/said flangesbeing adapted to rest upon the top body being recessed to permit freemove-' ment of said elements, said cable-entering passageway having awidth to permit the passage of either of said elements when alinedtherewith, but insuflicient to permitsimultaneous passage of bothelements.

3. In cable suspending-means and in combination, a clamp body having avertical bore of fixed dimensions and a cable-entering passagewayleading into. said bore, 0pposed cable-gripping jaws extending throughand rotatable within the bore, each jaw being flanged outwardly at itsupper end, said flanges being adapted to rest upon. the top 'of theclamp body to support the jaws, and jaw-adjusting means, said lattermeans in-,

eluding an element carried by and movable with each jaw, said elementscooperating in moving the jaws to cable-gripping position andmaintaining them in such position, said body being recessed to permitfre movement of saidelements, said body carrying members independent ofthe j aws to permit suspension of the body.

In testimony whereof we aflix our signatures in presence of twowitnesses.

CLARENCE T. MAPES. FERDINAND C. YANDA. I/Vitnesses:

W. R. SHoUP, J. P. DONALDSON.

